From: Evolution of forest soil properties after liming with a by-product derived from a sugar beet mill
In vitro experiment | Control | Limed samples | ||
---|---|---|---|---|
Hor. Ah (0–20 cm) | Time after liming | |||
24 h | 48 h | 72 h | ||
Limed with pure CaCO | ||||
pH (KCl) | 4.1 ± 0.1a | 5.79 ± 0.01b | 5.79 ± 0.01b | 5.78 ± 0.02b |
pH (saturated paste) | 4.8 ± 0.1a | 6.65 ± 0.02b | 6.66 ± 0.02b | 6.64 ± 0.02b |
pH (soil:water 1:2.5) | 5.0 ± 0.1a | 6.90 ± 0.01b | 6.90 ± 0.01b | 6.92 ± 0.01c |
H+ (cmolc kg−1) | 4.0 ± 0.1a | 0.20 ± 0.01b | 0.20 ± 0.01b | 0.20 ± 0.01b |
Al3+ (cmolc kg−1) | 1.4 ± 0.1a | 0.20 ± 0.1b | Traces | Traces |
Limed with lime sub-product | ||||
pH (KCl 1:2.5) | 4.1 ± 0.1 a | 5.30 ± 0.01 c | 5.40 ± 0.01c | 5.40 ± 0.01c |
pH (saturated paste) | 4.8 ± 0.1a | 6.25 ± 0.03b | 6.43 ± 0.02bc | 6.40 ± 0.02bc |
pH (soil:water 1:2.5) | 5.0 ± 0.1a | 6.38 ± 0.01c | 6.59 ± 0.01c | 6.58 ± 0.01c |
CEC (cmolc kg−1) | 26.0 ± 2.0a | 42.6 ± 0.4b | 43.3 ± 0.4b | 43.2 ± 0.4b |
Exchangeable Ca2+ (cmolc kg−1) | 1.2 ± 0.1a | 3.7 ± 0.3b | 3.4 ± 0.1b | 3.0 ± 0.2b |
Exchangeable Mg2+ (cmolc kg−1) | 0.5 ± 0.1a | 0.39 ± 0.01b | 0.36 ± 0.02b | 0.36 ± 0.02b |
Exchangeable K+ (cmolc kg−1) | 0.3 ± 0.1a | 0.09 ± 0.1b | 0.09 ± 0.01b | 0.07 ± 0.02b |
Base sum (cmolc kg−1) | 2.0 ± 0.1a | 4.2 ± 0.4b | 3.9 ± 0.4b | 3.4 ± 0.4b |
Base saturation (%) | 7.7 | 9.9 | 9.0 | 7.9 |
Exchangeable H+ (cmolc kg−1) | 4.0 ± 0.1a | 0.20 ± 0.01b | 0.20 ± 0.01b | 0.20 ± 0.01b |
Exchangeable Al3+ (cmolc kg−1) | 1.4 ± 0.1a | 0.20 ± 0.1b | Traces | Traces |